Relativita generale lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.), held in Salice d'Ulzio (Torino), Italy, July 16-25, 1964

Available for University of the Philippines System via SpringerLink

Vedute e problemi attuali in relativitáa generale lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Sestriere (Torino), Italy, July 20-30, 1958

Available for the University of the Philippines Diliman via SpringerLink. Click here to access

Deterministics chaos in general relativity. by Hobill, David

Canonical gravity from classical to quantum. by Ehlers, J.

New theories in physics proceedings of the XI Warsaw Symposium on Elementary Particle Physics, 23-27 May, 1988, Kazimierz, Poland

Proceedings of the fourth Marcel Grossmann meeting on general relativity, held at the University of Rome, La Sapienza, 17-21 June, 1985

Quantum concepts in space and time by Isham, C. J., Penrose, Roger

Classical general relativity proceedings of the conference on classical (non-quantum) general relativity, City University, London, 21-22 December 1983 by Bonnor, W. B. (William B.), Islam, Jamal N., MacCallum, M. A. H.

10th International Conference on General Relativity and Gravitation, Padova, 4-9 July 1983 contributed papers : vol.2 relativistic astrophysics, experimental gravitation, quantum g...

10th International Conference on General Relativity and Gravitation, Padova, 4-9 July 1983 contributed papers : vol.1 classical relativity